Apple holds an overwhelming 87.5% implied probability as the second-largest company by market cap at the end of September 2026, reflecting its current standing roughly $700 billion behind NVIDIA and well ahead of Alphabet. NVIDIA’s AI-driven GPU leadership and recent price strength have solidified its top spot, while Apple’s hardware ecosystem, services revenue, and measured AI integrations support more predictable valuation growth amid sector volatility. Alphabet, Microsoft, and others trail with single-digit or negligible odds because of wider market-cap gaps that would require outsized September moves unlikely in the remaining weeks. Traders appear to view near-term swings in AI chip demand or broader tech sentiment as insufficient to displace Apple before month-end resolution.